The Smithsonian Tropical Research Institute (STRI) maintains research facilities in different marine and terrestrial locations on the Isthmus of Panama. STRI awards the Earl S. Tupper 3-Year Postdoctoral Fellowship on a yearly basis, allowing scientists to test their innovative hypothesis. Disciplines include ecology, anthropology, paleontology, paleoecology, evolutionary biology, molecular phylogenetics, biogeography, animal behavior, neurobiology, soils sciences, and physiology of tropical plants and animals. Research should be based at one of the STRI facilities; proposals that include comparative research in other tropical countries will be considered. Annual stipend is $40,000 with yearly travel and research allotments.